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Confirmatory Study of BK1310 in Healthy Infants

Phase 3 Study of BK1310 Compared With ActHIB® and Tetrabik in Healthy Infants: A Randomized, Assessor-blind, Active-controlled

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03891758
Enrollment
267
Registered
2019-03-27
Start date
2019-04-01
Completion date
2020-08-10
Last updated
2026-01-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bacterial Meningitis, Diphtheria, Pertussis, Poliomyelitis, Tetanus

Keywords

Haemophilus influenza type b, Adsorbed Diphtheria-purified Pertussis-Tetanus- Inactivate poliovirus combined vaccine, Hib, DPT-IPV

Brief summary

The purpose of this study is to evaluate immunogenicity of BK1310 for all antigens (anti-PRP, diphtheria toxin, pertussis, tetanus toxin, and polio virus), after 3 times of injection, when compared noninferiority with co-administration of ActHIB® and Tetrabik, as well as efficacy and safety, in healthy infants.

Interventions

BIOLOGICALDPT-IPV-Hib

0.5mL, subcutaneous injection, 3 times with the 3-8weeks intervals then an additional injection after 6-13 months.

BIOLOGICALHib vaccine

0.5mL, subcutaneous injection, 3 times with the 3-8weeks intervals then an additional injection after 6-13 months.

BIOLOGICALDPT-IPV

0.5mL, subcutaneous injection, 3 times with the 3-8weeks intervals then an additional injection after 6-13 months.

Sponsors

The Research Foundation for Microbial Diseases of Osaka University
CollaboratorOTHER
Tanabe Pharma Corporation
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
2 Months to 42 Months
Healthy volunteers
Yes

Inclusion criteria

* Healthy infants aged ≥2 and \<43 months at the first vaccination of the study drug (recommended: ≥2 and \<7 months) * Written informed consent is obtained from a legal guardian (parent)

Exclusion criteria

* Possibility of anaphylaxis due to food or pharmaceuticals * With experience of Hib infection, diphtheria, pertussis, tetanus or acute poliomyelitis * With experience of Hib, diphteria, pertussis, tetanus or polio vaccination. * Participated in other studies within 12 weeks before obtaining consent * Considered to be not eligible by the principal investigators (sub-investigators) of the enrollment Additional screening criteria check may apply for qualification.

Design outcomes

Primary

MeasureTime frameDescription
Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRP4 weeks after the primary immunization (Visit 4)Antibody prevalence rate is defined as the percentage of participants whose criteria of each antibody titer: Anti-diphtheria antibody concentrations: \>=0.1 IU/mL, Anti-PT antibody concentrations: \>=10.0 EU/mL, Anti-FHA antibody concentrations: \>=10.0 EU/mL, Anti-tetanus antibody concentrations: \>=0.01 IU/mL, Anti-poliovirus serotype 1,2 and 3 antibody titers (fold) \>=8

Secondary

MeasureTime frameDescription
Geometric Mean Antibody Titer of Anti-PRP Antibody4weeks after the primary immunization (Visit 4)
Anti-PRP Antibody Prevalence Rate With 1 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody4 weeks after the booster dose (Visit 6)
Geometric Mean Antibody Titer Against Diphtheria Toxin4 weeks after the primary immunization (Visit 4)
Geometric Mean Antibody Titer Against Pertussis4 weeks after the primary immunization (Visit 4)
Anti-PRP Antibody Prevalence Rate With 0.15 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody4weeks after the primary immunization (Visit 4)
Geometric Mean Antibody Titer Against Polio Virus4 weeks after the primary immunization (Visit 4)
Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus4 weeks after the booster dose (Visit 6)Antibody prevalence rate is defined as the percentage of participants whose criteria of each antibody titer: Anti-diphtheria antibody concentrations: \>=0.1 IU/mL, Anti-PT antibody concentrations: \>=10.0 EU/mL, Anti-FHA antibody concentrations: \>=10.0 EU/mL, Anti-tetanus antibody concentrations: \>=0.01 IU/mL, Anti-poliovirus serotype 1,2 and 3 antibody titers (fold) \>=8
Fold Change in Geometric Mean Antibody Titer Against Polio VirusBaseline and 4 weeks after the primary immunization (Visit 6)
Geometric Mean Antibody Titer Against Tetanus Toxin4 weeks after the primary immunization (Visit 4)

Countries

Japan

Participant flow

Participants by arm

ArmCount
BK1310
DPT-IPV-Hib (Combined Vaccine) 0.5mL, subcutaneous injection, 3 times with the 3-8weeks intervals then an additional injection after 6-13 months.
133
ActHIB® and Tetrabik (Control)
Hib vaccine and DPT-IPV 0.5mL, subcutaneous injection, 3 times with the 3-8weeks intervals then an additional injection after 6-13 months.
133
Total266

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event20
Overall StudyWithdrawal by parent/guardian02

Baseline characteristics

CharacteristicBK1310ActHIB® and Tetrabik (Control)Total
Age, Customized
>=2 and <3 months
124 Participants125 Participants249 Participants
Age, Customized
>=3 months
9 Participants8 Participants17 Participants
Race/Ethnicity, Customized
Asian (Japanese)
133 Participants133 Participants266 Participants
Sex: Female, Male
Female
73 Participants62 Participants135 Participants
Sex: Female, Male
Male
60 Participants71 Participants131 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 1330 / 134
other
Total, other adverse events
131 / 133132 / 134
serious
Total, serious adverse events
9 / 13311 / 134

Outcome results

Primary

Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRP

Antibody prevalence rate is defined as the percentage of participants whose criteria of each antibody titer: Anti-diphtheria antibody concentrations: \>=0.1 IU/mL, Anti-PT antibody concentrations: \>=10.0 EU/mL, Anti-FHA antibody concentrations: \>=10.0 EU/mL, Anti-tetanus antibody concentrations: \>=0.01 IU/mL, Anti-poliovirus serotype 1,2 and 3 antibody titers (fold) \>=8

Time frame: 4 weeks after the primary immunization (Visit 4)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) . In BK1310 group number of subjects further decreased due to insufficient sample volume (polio serotype1,2 and 3: n=2 each). In control group number of subjects further decreased due to insufficient sample volume (polio serotype1,2 and 3: n=1 each).

ArmMeasureGroupValue (NUMBER)
BK1310Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against anti-PRP with 1 μg/mL or higher100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against diphtheria toxin99.2 percentage of participants
BK1310Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against pertussis (PT)100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against pertussis (FHA)100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against tetanus toxin100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against polio virus serotype 1100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against polio virus serotype 2100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against polio virus serotype 3100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against polio virus serotype 3100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against anti-PRP with 1 μg/mL or higher88.7 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against tetanus toxin99.2 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against diphtheria toxin98.5 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against polio virus serotype 2100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against pertussis (PT)100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against polio virus serotype 1100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Anti-PRP With 1 μg/mL or Higher, Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Anti-PRPAntibody prevalence rate against pertussis (FHA)100.0 percentage of participants
Secondary

Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus

Antibody prevalence rate is defined as the percentage of participants whose criteria of each antibody titer: Anti-diphtheria antibody concentrations: \>=0.1 IU/mL, Anti-PT antibody concentrations: \>=10.0 EU/mL, Anti-FHA antibody concentrations: \>=10.0 EU/mL, Anti-tetanus antibody concentrations: \>=0.01 IU/mL, Anti-poliovirus serotype 1,2 and 3 antibody titers (fold) \>=8

Time frame: 4 weeks after the booster dose (Visit 6)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1). For antibody analysis at Visit 6, number of subjects decreased from 266 to 264. BK1310 group: due to Adverse event (n=2). Control group: due to withdrawal by parent/guardian (n=1) .In BK1310 group number of subjects further decreased due to insufficient sample volume (tetanus: n=1, polio serotype1,2 and 3: n=1 each).

ArmMeasureGroupValue (NUMBER)
BK1310Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against pertussis (FHA)100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against polio virus serotype 1100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against pertussis (PT)100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against polio virus serotype 2100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against tetanus toxin100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against polio virus serotype 3100.0 percentage of participants
BK1310Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against diphtheria toxin100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against polio virus serotype 3100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against diphtheria toxin100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against pertussis (PT)100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against pertussis (FHA)100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against tetanus toxin99.2 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against polio virus serotype 1100.0 percentage of participants
ActHIB® and Tetrabik (Control)Antibody Prevalence Rate Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio Virus, Defined as the Percentage of Participants With the Antibody Against Diphtheria Toxin, Pertussis, Tetanus Toxin, and Polio VirusAntibody prevalence rate against polio virus serotype 2100.0 percentage of participants
Secondary

Anti-PRP Antibody Prevalence Rate With 0.15 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody

Time frame: 4weeks after the primary immunization (Visit 4)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureValue (NUMBER)
BK1310Anti-PRP Antibody Prevalence Rate With 0.15 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody100.0 percentage of participants
ActHIB® and Tetrabik (Control)Anti-PRP Antibody Prevalence Rate With 0.15 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody100.0 percentage of participants
Secondary

Anti-PRP Antibody Prevalence Rate With 0.15 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody

Time frame: 4 weeks after the booster dose (Visit 6)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .~For antibody analysis at Visit 6, number of subjects decreased from 266 to 264. BK1310 group: due to Adverse event (n=2, onty 1 patient was able to collect a sample at discontinuation. The data at this time point was included in Visit 6). Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureValue (NUMBER)
BK1310Anti-PRP Antibody Prevalence Rate With 0.15 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody100.0 percentage of participants
ActHIB® and Tetrabik (Control)Anti-PRP Antibody Prevalence Rate With 0.15 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody100.0 percentage of participants
Secondary

Anti-PRP Antibody Prevalence Rate With 1 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody

Time frame: 4 weeks after the booster dose (Visit 6)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .~For antibody analysis at Visit 6, number of subjects decreased from 266 to 264. BK1310 group: due to Adverse event (n=2, onty 1 patient was able to collect a sample at discontinuation. The data at this time point was included in Visit 6). Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureValue (NUMBER)
BK1310Anti-PRP Antibody Prevalence Rate With 1 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody100.0 percentage of participants
ActHIB® and Tetrabik (Control)Anti-PRP Antibody Prevalence Rate With 1 μg/mL or Higher, Defined as the Percentage of Participants With the Anti-PRP Antibody98.5 percentage of participants
Secondary

Fold Change in Geometric Mean Antibody Titer Against Polio Virus

Time frame: Baseline and 4 weeks after the primary immunization (Visit 6)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) . For antibody analysis at Visit 6, number of subjects decreased from 266 to 264. BK1310 group: due to Adverse event (n=2). Control group: due to withdrawal by parent/guardian (n=1) .In BK1310 group number of subjects further decreased due to insufficient sample volume (polio serotype1,2 and 3: n=1 each).

ArmMeasureGroupValue (GEOMETRIC_MEAN)
BK1310Fold Change in Geometric Mean Antibody Titer Against Polio VirusGeometric mean antibody titer against polio virus serotype 12524.05 fold change
BK1310Fold Change in Geometric Mean Antibody Titer Against Polio VirusGeometric mean antibody titer against polio virus serotype 28821.88 fold change
BK1310Fold Change in Geometric Mean Antibody Titer Against Polio VirusGeometric mean antibody titer against polio virus serotype 36439.23 fold change
ActHIB® and Tetrabik (Control)Fold Change in Geometric Mean Antibody Titer Against Polio VirusGeometric mean antibody titer against polio virus serotype 12662.91 fold change
ActHIB® and Tetrabik (Control)Fold Change in Geometric Mean Antibody Titer Against Polio VirusGeometric mean antibody titer against polio virus serotype 27512.10 fold change
ActHIB® and Tetrabik (Control)Fold Change in Geometric Mean Antibody Titer Against Polio VirusGeometric mean antibody titer against polio virus serotype 37355.96 fold change
Secondary

Geometric Mean Antibody Titer Against Diphtheria Toxin

Time frame: 4 weeks after the primary immunization (Visit 4)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureValue (GEOMETRIC_MEAN)
BK1310Geometric Mean Antibody Titer Against Diphtheria Toxin1.841 IU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against Diphtheria Toxin1.283 IU/mL
Secondary

Geometric Mean Antibody Titer Against Diphtheria Toxin

Time frame: 4 weeks after the booster dose (Visit 6)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .~For antibody analysis at Visit 6, number of subjects decreased from 266 to 264. BK1310 group: due to Adverse event (n=2, onty 1 patient was able to collect a sample at discontinuation. The data at this time point was included in Visit 6). Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureValue (GEOMETRIC_MEAN)
BK1310Geometric Mean Antibody Titer Against Diphtheria Toxin9.766 IU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against Diphtheria Toxin8.961 IU/mL
Secondary

Geometric Mean Antibody Titer Against Pertussis

Time frame: 4 weeks after the primary immunization (Visit 4)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureGroupValue (GEOMETRIC_MEAN)
BK1310Geometric Mean Antibody Titer Against Pertussispertussis (PT)155.30 EU/mL
BK1310Geometric Mean Antibody Titer Against Pertussispertussis (FHA)56.48 EU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against Pertussispertussis (PT)200.24 EU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against Pertussispertussis (FHA)85.24 EU/mL
Secondary

Geometric Mean Antibody Titer Against Pertussis

Time frame: 4 weeks after the booster dose (Visit 6)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .~For antibody analysis at Visit 6, number of subjects decreased from 266 to 264. BK1310 group: due to Adverse event (n=2, onty 1 patient was able to collect a sample at discontinuation. The data at this time point was included in Visit 6). Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureGroupValue (GEOMETRIC_MEAN)
BK1310Geometric Mean Antibody Titer Against PertussisGeometric mean antibody titer against pertussis (PT)209.05 EU/mL
BK1310Geometric Mean Antibody Titer Against PertussisGeometric mean antibody titer against pertussis (FHA)144.73 EU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against PertussisGeometric mean antibody titer against pertussis (PT)279.62 EU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against PertussisGeometric mean antibody titer against pertussis (FHA)221.34 EU/mL
Secondary

Geometric Mean Antibody Titer Against Polio Virus

Time frame: 4 weeks after the primary immunization (Visit 4)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) . In BK1310 group number of subjects further decreased due to insufficient sample volume (polio serotype1,2 and 3: n=2 each). In control group number of subjects further decreased due to insufficient sample volume (polio serotype1,2 and 3: n=1 each).

ArmMeasureGroupValue (GEOMETRIC_MEAN)
BK1310Geometric Mean Antibody Titer Against Polio Viruspolio virus serotype 1684.95 IU/mL
BK1310Geometric Mean Antibody Titer Against Polio Viruspolio virus serotype 22026.44 IU/mL
BK1310Geometric Mean Antibody Titer Against Polio Viruspolio virus serotype 31729.00 IU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against Polio Viruspolio virus serotype 1663.98 IU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against Polio Viruspolio virus serotype 21767.97 IU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against Polio Viruspolio virus serotype 32075.06 IU/mL
Secondary

Geometric Mean Antibody Titer Against Tetanus Toxin

Time frame: 4 weeks after the booster dose (Visit 6)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) . For antibody analysis at Visit 6, number of subjects decreased from 266 to 264. BK1310 group: due to Adverse event (n=2). Control group: due to withdrawal by parent/guardian (n=1) .In BK1310 group number of subjects further decreased due to insufficient sample volume (n=1).

ArmMeasureValue (GEOMETRIC_MEAN)
BK1310Geometric Mean Antibody Titer Against Tetanus Toxin1.904 IU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against Tetanus Toxin0.598 IU/mL
Secondary

Geometric Mean Antibody Titer Against Tetanus Toxin

Time frame: 4 weeks after the primary immunization (Visit 4)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureValue (GEOMETRIC_MEAN)
BK1310Geometric Mean Antibody Titer Against Tetanus Toxin0.473 IU/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer Against Tetanus Toxin0.158 IU/mL
Secondary

Geometric Mean Antibody Titer of Anti-PRP Antibody

Time frame: 4weeks after the primary immunization (Visit 4)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureValue (GEOMETRIC_MEAN)
BK1310Geometric Mean Antibody Titer of Anti-PRP Antibody23.688 µg/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer of Anti-PRP Antibody6.698 µg/mL
Secondary

Geometric Mean Antibody Titer of Anti-PRP Antibody

Time frame: 4 weeks after the booster dose (Visit 6)

Population: For antibody analysis at Visit 4, number of subjects decreased from 267 to 266. Control group: due to withdrawal by parent/guardian (n=1) .~For antibody analysis at Visit 6, number of subjects decreased from 266 to 264. BK1310 group: due to Adverse event (n=2, onty 1 patient was able to collect a sample at discontinuation. The data at this time point was included in Visit 6). Control group: due to withdrawal by parent/guardian (n=1) .

ArmMeasureValue (GEOMETRIC_MEAN)
BK1310Geometric Mean Antibody Titer of Anti-PRP Antibody56.545 µg/mL
ActHIB® and Tetrabik (Control)Geometric Mean Antibody Titer of Anti-PRP Antibody34.246 µg/mL

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026